20421014311 has 8 divisors (see below), whose sum is σ = 20899272240. Its totient is φ = 19948285632.

The previous prime is 20421014309. The next prime is 20421014377. The reversal of 20421014311 is 11341012402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20421014311 - 2¹ = 20421014309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20421014011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1374840 + ... + 1389613.

It is an arithmetic number, because the mean of its divisors is an integer number (2612409030).

Almost surely, 2^20421014311 is an apocalyptic number.

20421014311 is a deficient number, since it is larger than the sum of its proper divisors (478257929).

20421014311 is an equidigital number, since it uses as much as digits as its factorization.

20421014311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2764625.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 20421014311 its reverse (11341012402), we get a palindrome (31762026713).

The spelling of 20421014311 in words is "twenty billion, four hundred twenty-one million, fourteen thousand, three hundred eleven".